Blog Archives

Income inequality and partisan voting in the United States

October 29, 2009
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Lane Kenworthy, Yu-Sung Su, and I write: Income inequality in the United States has risen during the past several decades. Has this produced an increase in partisan voting differences between rich and poor? We examine trends from the 1940s thr...

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Multiple Imputation with Diagnostics (mi) in R: Opening Windows into the Black Box

June 26, 2009
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Our article (by Yu-Sung, Jennifer, Masanao, and myself, and based also on work with Kobi, Grazia, and Peter Messeri) will be appearing in the Journal of Statistical Software, in a special issue on missing-data imputation. Here's the abstract: ...

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Who wants school vouchers? Rich whites and poor nonwhites

June 15, 2009
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As part of our Red State, Blue State research, we developed statistical tools for estimating public opinion among subsets of the population. Recently Yu-Sung Su, Yair Ghitza, and I applied these methods to see where school vouchers are more or...

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What is faster, Winbugs or Openbugs?

July 14, 2008
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Sandra McBride writes: My current model (in Winbugs) runs very slowly on my very slow laptop, so I am getting a new desktop. Here are some questions in the hopes of speeding up my model: Is Winbugs or Openbugs multithreaded?...

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If you don’t use R to fit multilevel models, there’s no point in reading this one

October 6, 2007
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David Afshartous writes, What is the difference between sim() and mcsamp(), if any? If there is a difference, what should I expect in terms of difference in results? My reply:...

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Recent changes in the R package "arm" (applied regression and multilevel modeing)

September 19, 2007
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Yu-Sung writes,...

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Graphs from tables

August 30, 2007
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Samantha Ross writes:...

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A new default prior distribution for logistic and other regression coefficients

August 14, 2007
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This (by Aleks, Grazia, Yu-Sung, and myself) is really cool. Here's the abstract: We propose a new prior distribution for classical (non-hierarchical) logistic regression models, constructed by first scaling all nonbinary variables to have mea...

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Bayesian logistic regression software

August 23, 2006
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Aleks pointed me to this site by Alexander Genkin, David D. Lewis, and David Madigan that has a program for Bayesian logistic regression. It appears to allow some hierarchical modeling and can fit very large datasets. I haven't tried it... ...

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